In physics, 2-dimensional systems are idealized physical systems whose relevant degrees of freedom are confined to a plane or an effectively two-dimensional manifold, such that dynamics and interactions occur predominantly within two spatial dimensions. They exhibit distinct phenomena compared with three-dimensional counterparts, including modified density of states, altered screening and fluctuation behavior, and dimensionality-dependent phase transitions (e.g., Kosterlitz–Thouless transitions mediated by topological defects). Examples include electrons in quantum wells or at interfaces, ultrathin films, and certain spin or lattice models defined on 2D lattices, which serve as fundamental platforms for studying critical phenomena, topological phases, and low-dimensional quantum many-body effects.
If you start with a two-dimensional ribbon and make it narrower and narrower, when does it stop being a ribbon and start being a one-dimensional line? Scientists from Utrecht University and the University of Twente made one-atom-thick ...
Nanophysics
Mar 3, 2025
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Superconductivity is an intriguing property observed in some materials, which entails the ability to conduct electric current combined with an electrical resistance of zero at low temperatures. Physicists have observed this ...
Despite improvements to air filtration technology in the aftermath of the COVID-19 pandemic, some of the smallest particles—those of automobile and factory emissions—can still make their way through less efficient, but ...
Nanomaterials
Feb 27, 2025
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MIT physicists report the unexpected discovery of electrons forming crystalline structures in a material only billionths of a meter thick. The work adds to a gold mine of discoveries originating from the material, which the ...
Condensed Matter
Feb 26, 2025
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Researchers at the National Graphene Institute at the University of Manchester have achieved a significant milestone in the field of quantum electronics with their latest study on spin injection in graphene. The paper, published ...
Condensed Matter
Feb 26, 2025
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Gas sensing technologies play a vital role in our modern world, from ensuring our safety in homes and workplaces to monitoring environmental pollution and industrial processes. Traditional gas sensors, while effective, often ...
Nanomaterials
Feb 25, 2025
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Cadmium selenide nanoplatelets provide a promising foundation for the development of innovative electronic materials. Researchers around the world have taken a particular interest in these tiny platelets, which are only a ...
Nanophysics
Feb 25, 2025
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A technological advancement from Tel Aviv University has, for the first time, enabled the application of the scientific phenomenon of superlubricity in electronic components. As a result, the research team successfully harnessed ...
Nanophysics
Feb 24, 2025
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A collaborative team of researchers from the Max Planck Institute for Structure and Dynamics of Matter (MPSD), Nanjing University, Songshan Lake Materials Laboratory (SLAB), and international partners has introduced a new ...
Nanophysics
Feb 20, 2025
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The limitations of two-dimensional (2D) displays in representing the depth of the three-dimensional (3D) world have prompted researchers to explore alternatives that offer a more immersive experience. Volumetric displays ...
Optics & Photonics
Feb 19, 2025
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